UIUC Physics Lecture Demo: Lumirod and Laser Pointer

UIUC Physics
Lecture Demonstration
Database

Demo # 429

Lumirod and Laser Pointer

ID # 429

Description:

Upon shining the laser into a twisted plastic rod, you can see rays bending around the surface of the tubing and exhibiting total internal reflection.

Picture of Lumirod and Laser Pointer

Physics Concept:

Light
Fiber Optics
Light Transmission in Other Materials

The demonstration takes about 1 minute to perform.